The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Otus 85mm F1.4 and the Samyang Premium MF 85mm F1.2 for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Zeiss Otus 85mm F1.4 is the longer of the two lenses at 138mm. The Samyang Premium MF 85mm F1.2 with a length of 98mm, is 40mm shorter. Besides being longer, the Zeiss Otus 85mm F1.4 also has a larger diameter of 101mm compared to the Samyang Premium MF 85mm F1.2's 93mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Samyang Premium MF 85mm F1.2 weighs 1050g, 12% (150g) lighter than the Zeiss Otus 85mm F1.4's weight of 1200g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon EF Mount for size comparison purposes.
Telephoto Lenses in Canon EF Mount for Size Comparison
Lens Mounts
Both the Zeiss Otus 85mm F1.4 and the Samyang Premium MF 85mm F1.2 has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Zeiss Otus 85mm F1.4 is also available in Nikon F (FX) mount.
Focal Range
Both lenses have the same focal range of
85mm but while Zeiss Otus 85mm F1.4 has the fastest aperture of
F1.4, the Samyang Premium MF 85mm F1.2's widest aperture value is
F1.2.